[QUOTE="God's Beard!";212293398]Let's be real. Outside of some mild confusion for a while, what really changes?
Who cares if Petrified Root-Kin can't be blocked by Plaxmanta in Ravnica block flashback drafts? Dispel countering Snapcaster Mage and Archangel Avacyn might be a problem, though.
All you really have to do is errata Instants to Instant Sorceries and flash to instant creatures and boom. Problem solved. It's not like they haven't done stuff like that before like with removed from the game and exile. They recently updated the entire history of magic for the new colorless mana symbols too.[/QUOTE]They've come out and said that the grand creature type update was a mistake because having cards not be what they say they are is terrible UX. Having to explain that, no, my waterfront bouncer doesn't die, because it's a merfolk, even though it doesn't say so anywhere on the card is mostly bad for the game. Having to say that, no, your Archaeomancer can't get back your Archangel Avacyn even though it's an instant is similarly not great.
The colorless mana symbol is a much, much smaller deal and it still took players, even enfranchised players, some work to understand.